props.history is undefined

Após inserir e configurar o router no projeto eu recebo esse erro no browser:

TypeError: props.history is undefined
Router
/Users/rocha/Sites/cursos/modules/Router.js:19

  16 | super(props);
  17 | 
  18 | this.state = {
> 19 |   location: props.history.location
     | ^  20 | };
  21 | 
  22 | // This is a bit of a hack. We have to start listening for location

Esse é o meu arquivo index.js:

import React from 'react';
import ReactDOM from 'react-dom';
import './index.css';
import App from './App';
import Autores from './Autores';
import Livros from './Livros';
import Sobre from './Sobre';
import NotFound from './NotFound';
import * as serviceWorker from './serviceWorker';
import { BrowserRouter, Switch, Router } from "react-router-dom";

ReactDOM.render(
  <BrowserRouter>
    <Switch>
      <Router path="/" exact={true} component={App} />
      <Router path="/autores" component={Autores} />
      <Router path="/livros" component={Livros} />
      <Router path="/sobre" component={Sobre} />
      <Router component={NotFound} />
    </Switch>
  </BrowserRouter>,
  document.getElementById('root')
);

// If you want your app to work offline and load faster, you can change
// unregister() to register() below. Note this comes with some pitfalls.
// Learn more about service workers: https://bit.ly/CRA-PWA
serviceWorker.unregister();